Which position do Sunderland need to strengthen the most in January?

The January transfer window is now open, and Sunderland will surely be seeking to make additions to their squad to aid their quest to avoid relegation.

Sunderland manager Chris Coleman will be aware that several new arrivals are probably needed, but in which position does the club need to strengthen the most?

The Black Cats would certainly benefit from having some greater creativity in central midfield.

Although talented youngsters George Honeyman and Lynden Gooch are capable of producing impressive performances, the arrival of a more experienced attacking midfielder would help to improve Sunderland's overall effectiveness as a team.

Jack Colback may not be the most popular figure at Sunderland having left the club to join rivals Newcastle United in 2014, but there has been speculation that he could make a return to the Stadium of Light, as reported by The Sunderland Echo.

Colback is exactly the type of player that Sunderland require at present given that he can retain possession extremely well and help to set the tempo for his side.

Having been isolated at Newcastle, Colback needs to play regularly to get his career back on track and Sunderland would certainly be able to help him in that regard.

If such a deal did happen then it may take some time for Colback to regain the backing of the Sunderland supporters, but his return would be hugely beneficial for the club.